Miner&#39;s fuse cutter



May 21, 1935. H. BAKER I MINERS FUSE CUTTER Filed June 19, 1934 Q ru M 5 ,8 7.. M

j wwrar ATTOR N EY Patented May21,'1935' l aooaosoi 'Hallis Baker,

mes FUSE CUTTER v comm, Idahm'assignorto John F.

Vanderpool' ancl William H. Baker, Golden,

J ne W ADPlicatibh- 311118 19, 1934, SerialN. 731 ,356 l .jsfilailnsf (01. sc 1 l *The invention relates toga miners fusegcutter iand .more especially: to a combined-fuse cutter and splitter. Y w v1 l The primary objectofithe invention is the pro-- 5 vision iota tool of this character, wherein a plu- :rality of cuttingblade's are; arranged so thata fuse. for blasting operation can be cut and split r when necessary the" cutting'gandsplitting being carried forth .in. at' single operatiorr and thereby overcoming 'the necessityfor the. use ofl'a' pen'.

Zk-nife as is generally employedby shot-firers, and iinithe-use of such'knifeone operation being re- ;quired to cut and the other to split the fusebefore igniting it, the blades being separable so that' the i5 same canbe sharpened or repaired'orthe placement of new blades as the occasion may require under -theu'se of suchtool. Another object of the invention isthe provision "of a tool of this-character; wherein a miners fuse can be severed with idispatch arid without inconvenience to theuser of the tool; this being required particularly when the fuse atthe end to be ignited-becomes wet or when it is desired to have a determined length of fuse for a blasting operationfthe tool being also provided with awheel or roller *cutter for use f'on a dynamite sticl; for

thesplitting of the same priorto the said-stick of dynamite being tamped in a drill holeythis "cutter minimizingthedan'ger in the handling of. the dynamite resultant from friction incidentt o the use of a fixed blade landalso assuressafety against cuttingthe fingers or hands of 'ashot firer, the blade being more accurate in service thanapenknife or'the like. p l l I l 'A further object, of th' invention is the pro--. vision of a tool of this character, wherein the construction thereof jis designed solely and particularly ior the cutting and splitting of a fuse as employed by shot-firers Lin mines and eliminating the necessity for the usej'of a pocket or penknife, which renders thisfworkihazardous andslow;

. A still further object of the invention isthe provision ofv. a,to ol of this character which is 1 sirnplef in constiuction; thoroughly reliable and effectivein its purpose, convenient fol-carriage on the "person; readily and. e'asily operated, strong, durable and inexpensive to manufacture.

Withlthese and other objects in view, the invention' consists. in the features of. construction, combination and arrangement of parts as will be" hereinafter" more fully described in detail, illustrated in the accompanying drawing, which 5;; S 9$$ h preferred m diment Qt -t rmthe jaw i3 provide seats for the minersfuse.

vention, and pointed outin the claims hereunto appended. V In thedrawing: v Figure l is a side elevation of a tool constructed in' aocordance with the invention. r

Figure 2-is a top plan view thereof and partly 'brokenawa'y.--

Figure3is aperspeetive view of oneof-the jaws of the tool. e

Figure 4 is a another of the blades of the tool. I

1 Figure 5 is aperspeetive view of a further jaw of'the tool. I I V Figure-6 is a perspective view of the jaw shown in Figure 5, but the same being inverted. Similar reference characters indicate corresponding parts throughout the several views in the drawing. V x V I Referring to the drawing in detail, the tool embodying the present-invention comprises a pairof levers Iii and {1, respectively, these being {disposed in crossed relation to each-other and pivoted, as at l2, at thel cro ssing point of said. levers. 'The lever in is ior'rned with a flat platelik e jaw l3 and the lever H has the'jaw it.

The jaw 13, at itsinner face, has iormed'ther'ein; transversely of-the'same, the spaced parallel "half-circular grooves l5,- one being longitudinally channeled; as a-t l5, pr'eierabyintersecting the innermostgroove and providing a seat for 1 a cutting'blade ll aligned with said channel '16 and detachably carried by the jaw. it, the

blade being separable from this jaw throughthe medium of fasteners-i8, These grooves'lfi in nter osed between the jaws l3 and M isa third jaw l9, it having the spaced parallel grooves 20 companions to the grooves :5 for .ac-' commodatingthe niiners fuse. The innermost grooveiifi has intersecting the same the slot 2! for the passage of'the blade l'l therethrough and 7 into the channel Hi, this blade l'l'being for the purpose of'longitudinally splitting the fuse for a determined distance of its length.

The third jaw ifi'has built thereon aside wall .22 which isat right angles thereto and material- -1y' strengthens said java-the latter being swingingly connected, to. thepivot 12, it beingbifurdated, as at 23, to straddle both levers iii-and UH atfthe pivotal "point thereof; interposed be- .tween the jaw M and the third jaw i9 is a 'coiled compression spring '24 which serves to .urge thejaw l4 away from thejaw Hi to recede the-blade 11 away ,from the grooves 26, while carried; bythe lever ii is the leaf spring 25 fragmentaryperspective view of and hold the same normally in open or spread apart position, this spring 25 at its free end being in contact with the lever Ill, as is clearly shown in Figure l of the drawing. 7

At the outside of the jaw I4 and detachably mounted thereon is a'cutting blade 26, this being disposed at right angles to the blade I1, and such blade 26 plays through a clearance 27 in the third jaw l9 and operates in the slot 28 in the jaw'I3, the purpose of the blade 26 being adapted to sever or cut the fuse in desired lengths simultaneously with the longitudinal splitting of said fuse, both blades I1 and 26 relatively narrow blade 3ii, this being det'achablyv being formed with the straight beveled :cutting edges 29. 7

On the jaw I4 opposite to the blade 26 is a carried by said jaw I4 and offset laterally with respect thereto, while upon the jaw Mand separable therefrom is the blade 3I companionto the blade 36, these blades being adapted for the cutting of fuse when presented to the blades outside of the grooves 85 and 20' which are companions to each other.

. The third jaw I Scarries a stop 32 engaging an abutment lug 33 on the lever I0, so as to limit the swinging movement of the jaw I 9 in one direction.

It should be apparent that when the fuse is placed within the outermost groove I in the, jaw It the said fuse will be severed but not longitudinally split. On the placing of the fuse in the innermost groove I5 in the jaw I3 the said fuse will be severed and longitudinally split.

The lever I0 close to the pivot I2 carries a swinging latch 34 to engage a keeper 35 on the lever II and this latch holds the tool closed, or the jaws I3, I 4 and I9 together. t

On the lever II], at thehandle end thereof, is a bearing 36 in which is pivoted, at 37, a swinging carrier 38 for a rotatable disk-like cutting wheel 39 and said carrier .38 when swung .outwardly brings the cutting wheel 39 into a position for use for the splitting of dynamite sticks, the carrier 38 being swung inwardly to have the cutting wheel 39 protected bya guard projection 40 when the said wheel 39 is inactive for use. The carrier 38 in its mounting is designed to act in conformity with the blades of a pen or pocket knife, as said carrier in either thrown position.

with guide openings 42 in the jaw I 9 and through the instrumentality of these, the jaws I 3 and I 9 are held in aligned relation to each other, particularly when the said jaws are brought together under a straining action. r

The channel It in the jaw I3 has a filling 43 of an alloy, as for example, copper, brass, bronze, lead or any other soft metal or material to avoid dulling of the cutting edge of the blade I! when the tool is in use.

On the lever ,I I, at the handle end thereof, is permanently placed a thimble :34, orrthe latter is formed from this end, and the purpose of said thimble is to enable the tool to be used for making a hole in a stick of dynamite.

What is claimed is:

1. A tool of the character described comprising a pair of pivotally connected levers disposed in crossed relation to each other, jaws formed on the respective levers, another jaw arranged between the jaws on said levers andsupported-by the pivot connecting said levers, one of the jaws ing against the said other the respective levers,- tween the jaws on said levers and supported by 75 jaws on the levers and the said other jaw having companion spaced parallel grooves transversely thereof, cutting blades on one lever jaw and operating crosswise'of the groovesand longitudinally of a pair of opposed grooves and centrally of the same,*and a compression spring actjaw and the lever jaw next thereto; v

.3, A tool of the character described comprisingapair of pivotally connected levers disposed in crossedrelation to each other, jaws formed on the respective levers, another jaw arranged between thejawsonsaid levers and supported by the pivot connecting said levers, one of the jaws on the levers and the said other jaw having companion spaced parallel grooves transversely thereof, cutting blades on onelever jaw and op crating crosswise of the grooves and longitudinally of a pair of opposed grooves and centrally of the same, a compression spring acting against the said other jaw and the lever jaw next thereto, and a stop for said other jaw to limit the swinging movement thereof in one direction.

4. A tool of the-character described comprising a pair of pivotally connected levers disposed in crossed relation to each other, jaws formed onthe respective'levers, another, jaw arranged between the jaws on said; levers and supported by the pivot connecting said levers, one of the jaws on the'levers and the said other jaw having companion spaced parallel grooves transversely thereof, cutting blades on one lever jaw and operating crosswise of the grooves and longitudinally of a pair of opposed groovesand centrally of the same, a compression spring'acting against the said other jaw and the lever'jaw next thereto,

'a stop-for said otherjaw to limit the swinging movement thereof inone directiomand a latch carried by one lever and 'engageable with the other to hold the jaws together.

5. A tool of the character described comprising a pair of pivotally connected levers disposed in crossed relation to each other, jaws formed on the respective levers, another jaw arrangedbetween the jaws on said levers and supported by the pivot connecting said'levers, one ofthe jaws on the levers and the said other jaw having companion spaced parallel grooves transversely thereof, cutting blades on one lever jaw and operating crosswise of the grooves and longitudinally of a pair of opposed grooves and centrally of the same, a compression spring acting against. the said other jaw and the lever jaw next thereto, 'a stop for said other jaw to limit the swinging movement thereof in one direction, a latch carried by one lever and engageable with the other to hold the jaws together, and a spring spreading the levers apart from each other.

6. A tool of the character described comprising a pair of pivotally connected levers disposed in crossed relation to each other,ijaws formed on another jaw arranged ber V p r 2,002,050 the pivotconnecting saidlevers, one of the jaws onthe levers and the said other jaw having com-'- panion spaced parallel. grooves transversely thereof, cutting blades on one lever jaw and opcrating crosswise of the grooves and longitudinally of a pair of opposed grooves andcentrally of the same, a' compression'spring acting against the said other jaw and the lever jaw next thereto, a stop for said other jaw to. limit the swinging movement thereof in one direction, a'1atch-car-- ried by one lever and 'engageable with the other to hold the jaws'together, a spring spreading the levers apart from .each other, and a cutting wheel swingingly supported on one of said levers.

'7. Atool of the character described compris inga pair of pivotally connected levers disposed in crossedrelation to each other, jawsformed on the respective levers, another jaw arranged between the jaws on said levers andsupported by the pivot connecting said levers, one of the jaws on the levers and the said other jaw having companion spaced parallel grooves transversely thereof, cutting'blades on one-lever jaw and operating crosswise of the grooves and longinext thereto, a stopufor said other tudinally of a pair of opposed grooves and centrally of the same, a compression spring acting against, the said other jaw and the lever jaw jawto limit the swinging movement thereof in one direction, alatch carried by one lever-and engageable with the other to hold the jaws together, a spring spreading the levers apart from each other,rand

a keeper for said cutting wheel. 7

8. A tool of the character described comprising a pair of pivotally connected levers disposed 'in crossed relation to each other, jaws formed on therespective levers, another jaw arranged between the jawson said levers and supported by the pivot connecting said levers, one of the jaws on the levers and the'said other. jaw having companion spaced parallel grooves transversely thereof, cutting blades 'on' one lever jaw and dinally of a pair of opposed grooves and centrally 0f the same, and a filling of soft material located at one of the'transvers'e grooves and operative to' preventdulling of the blade confrontedthereby.

operating crosswise of the grooves and longitu- HALLIS BAKER. 

